Bunsen burner.



No. 708,259. Patehted Sept. 2, I902.

w. H. & a. E. RUSSELL.

BUNSEN BURNER.

(Application filed Dec. 2,1901.

(No Model.) S S 2 sheets-Sheet l.

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Patented Sept. v2, I902.

. w. H. a 6.; E. RUSSELL.

BU NSEN BURNER. (Application filed Dec. '2, 1901.)

2 Sheets-Sheet 2.

(No Model.)

WITNEIS'SES:

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UNITED STATES PATENT OFFICE.

WILLIAM H. RUSSELL AND GEORGE E. RUSSELL, OF JERSEY CITY, NEW JERSEY.

BUNSEN BURNER.

SPECIFICATION formingvpart of Letters Patent No. 708,259, datedSeptember 2, 1902.

Application filed December 2, 1901. Serial No. 84,350. (No model.) 7

of Bunsen burners where air is drawn in to mix with an injecting jet ofhydrocarbon either in the form of a gas or vapor, and our burner isapplicable both for heating pur poses or for illumination with the aidof a I5 mantle.

Our burner has several novel and important features. The injecting jetof fluid hydrocarbon is controlled by a needle-valve axially alined withthe burner-tube, which latter is telescopic, so that it may be madelonger or shorter at will to vary the force of the jet. A by-passigniter is provided which has a sepa rate cut-off. The chimney of theburner is also telescopic.

In the accompanying drawings, which illustrate the embodiment of ourburner, Figure 1 is a sectional elevation of the burner as employed in alamp for illuminating purposes. Fig. 2 is a sectional view the plane ofwhich is at right angles to the sectional plane of Fig.

1. Fig. 3 is a sectional plan, the plane of the section being takenthrough the air-inlets of the burner-tube. Fig. 4 is a sectional sideelevation of the invention as applied to a heater.

Referring, primarily, to the first three figures of the drawings, 1 isthe hollow body of the burner, on which is a nipple 2. In this nipple isthe jet-outlet 2 for the gas, which is a contracted conical aperture. Onthe nip- 0 ple 2 is secured the fixed section 3 of the burner-tube,provided with a lateral air inlet or inlets 4 near the point ofattachment to the nipple, and slidable telescopically on the section 3is the movable section 3 of the burner- 5 tube, whereby the saidtube maybe made longer or shorter to vary the force of the jet. By elongatingthe tube beyond the air-inlets 4 the force of the jet is increased. Thisburner-tube is alined axially with the jet 2.

In the bodyl opposite to the nipple 2 is secured a plug 5, through whichis screwed a needle-valve 6, which is axially alined with I thejet-aperture and burner-tube. The gas or vapor of hydrocarbon isadmitted to the chamber of the body 1 at an inlet 7, and theneedle-valve 6 controls the outlet 2.

In order to provide a means of igniting the burner, it is provided witha slender by-pass tube 8. This tube is connected bya passage 9 with thegas-chamber in the body 1, so that its supply is not cut oif by theclosure of the jet'outlet by the valve 6, and when ignited it willremain burning when the valve 6 is closed; but a screw needle-valve 10is provided which is adapted to close or partially close the passage 9,so as to nicely regulate or wholly cut 0d at will the quantity of gassupplied to the by-pass tube 8. This tube will vary in length accordingto circumstances.

In Fig. 1 there are two tubes or pipes 11, which depend from thegas-service pipe 12 and supply the burner. One of'these parallel pipesmay be plugged or stopped and the other, which is provided with astop-cock 13, be employed to supply the gas. The burner is provided witha chimney-gallery. 15 is the glass globe or outer chimney, 16 the shade,and 17 the mantle. These are common to this class of lamps. 18 is ametal chimney proper which depends into the outer glass chimney to thetop of the mantle. The chimney 18 is supported by a transverse bar 19 onthe parallel pipes 11, said bar having eyes through which said pipespass and setscrews 20 to clamp the bar to the pipes. This chimney istelescopic, the upper portion 18 thereof telescoping with the lower part18. The object of this is to increase or decrease the draft at will tosuit the conditions, and especially the character of the hydrocarbonfluid employed.

The burner when employed for illuminating purposes, as in Fig. 1, willhave the movable section 3 of the burner-tube enlarged at its end andfurnished with the usual gauze cap 21 to adapt it to receive the mantle.In Fig. 4 We have shown the burner constructed for heating purposes; butthis form differs in no material respect from the form alreadydescribed. The section 3 of the burner-tube is represented in Fig. 4 asa plain cylinder; but this section may have any form in crosssectionthat is desired or adapted to the uses of the burner.

Having thus described our invention, we claim 1. A Bunsen burner havingan elongatable burner-tube, means for supplying gas thereto, atelescopic chimney, a bar carrying said chimney and upright parallelguides for said bar, substantially as set forth.

2. A Bunsen burner having a telescopic burner-tube and a telescopicchimney alined therewith.

In witness whereof we have hereunto signed our names, this 29th day ofNovember, 1901, in the presence of two subscribing witnesses. I 5

WILLIAM H. RUSSELL. GEORGE E. RUSSELL. Witnesses:

HENRY CONNETT, PETER A. Ross.

